混凝土及钢纤维混凝土板爆炸破坏研究  

Study on Collapse of Common and Steel Fiber Reinforced Concrete Slabs Subjected to Contact Detonation

作　　者：董新龙[1] 洪志权[1] 高培正[2] 陈江瑛[1] 邵世明[1] 黄德进[1] 王礼立[1] 

机构地区：[1]宁波大学力学与材料科学研究中心,浙江宁波315211 [2]中国人民解放军第二炮工程设计研究院,北京100011

出　　处：《兵工学报》2009年第S2期280-283,共4页Acta Armamentarii

摘　　要：对混凝土和钢纤维增强混凝土板在爆炸载荷作用下的响应及震塌破坏开展实验研究。测试了混凝土中冲击波随传播距离的衰减特性;并利用有限元方法对震塌爆炸过程的物理图像进行了分析。实验与有限元计算结果吻合较好。实验与计算结果显示:混凝土板的总体震塌实际上是一个随着应力波的传播在不同阶段由不同的破坏机制分别起主导作用的发展过程;钢纤维的确能阻碍损伤区的扩大和裂纹的扩展,提高局部抗震塌性能。研究结果为抗爆炸混凝土结构的分析设计提供了参考。The dynamic response and collapse of common and steel fiber reinforced concrete slabs subjected to contact detonations were studied experimentally.The attenuation characteristics of the shock wave with propagating distance were measured;the physical images of dynamic damage and collapse processes of the slabs induced by contact detonation were analyzed by the finite element method.The numerical results consist with the experimental well.The experimental and numerical results show that the entire collapse of the concrete slab is a growing process actually with the propagation of stress wave,of which the different stages are led by the different destructive mechanism respectively;the steel fiber reinforced concrete can prevent the damage area and the crack from propagating to improve the local anti-collapse performance.The investigated results can provide reference for analyzing and designing anti-explosion concrete construction.

关 键 词：爆炸力学 混凝土 震塌 数值分析 

分 类 号：O383.2[理学—流体力学]